Harrow.



C. E. WHITE.

HARROW.

APPLICATION FILED MAY 29, 19ML- Patented Mar.8,1910.

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CHARLES E, JVHTE, GF MGLINE, LLLINCIS, ASSIGNO" TO DEERE (Si: MANSUR CGIMTEANY, A. GGRPGBLTION OF LMNGIS.

HARRDV.

Specification of Letters Estant.

Potent-ed Mar. 8, 19M).

Application filed May 29, 1308. Serial No. 435,829.

Moline, in the county of Rock Island and- State ot Illinois. hare invented certain new andnsetul 'improvements in Harrows, of

which the :following is a specication, reference being had therein to the accompany-v inge` drawing. f

',liis A.invention relates to hai-rows which are adapted for the renovation. of alfalfa, or other crops of a` similar character. ln implements of this character use is made of disks with outwardly extending spike teeth. These toothed disks or heads are arranged in gangs and roll over the ground in niuch the' saine manner as do the disks of the ordinary disk'harrow. their action, however, being' quite diilerei'it.

The. object of my invention is to improve the construction of the. heads and also the method of mounting the 4heads and the scraper bars with which the heads are provided.

vlin the aecolnpanying drawing.'7 which illustrates a practical embodiment of my invention. Figure l is a rear elevation oi thc barrow. the right gang ot' tools heine' shown in section. Fie'. 2 is an cnlargfd verL tical sectional view o two oi the inner heads ot' one of the gangs. 'Fig'. 3 is a sectional view ot one. ot the` rangs the section being taken on line 3 3 in Fig. l. l is a persjnective View showing` the two disk plates ot one oi: the heads separated from cach other.

'lhrtraine ot the implement is preferably ot' the disk harrow type in which two gang trames are pirolalliv connected to the draft hars. and are provided with means to cilect their-angular adjustnwnt in relation to the line ot (li-atl. inasmuch as lthis type of iranio is'well known. l have shown in the drawings onl)1 the niaiu traine parts dircctly associated with the tool `gangs. j

lach oi" the anpr trames comprises transverse bars 'l and Q `which are united by angle bars 3f. Depending bars l are secured to the. liars 27 and at their lowerends carry the. hearingboxes 5. 5 ot' the tool gangs.

Each tool `rang .conipriscs a plurality oi' heads or toothed disks which art` n'iounted on a gang' holt T. and maintained in suitable spaced relation by spools 8, Sl. The sparing spools ll arc sjwcialtv constructed to recoit@ the bearing boxes 5, being formed with ontturned ilanges 9 between which and a central liange 5 of the bores are inonnted wooden bearing rings 5b. The bearing boxes are preferably formed in two parts 5@ and 5, the .toriner having an tip-standing extension to which the depending bar is bolted.

Each of the toothed heads comprises a inain disk part l0 made up of the two plates ft, 10". Each of these plates has a thickened peripheralv part on the inner face ofrwhich a series of grooves are formed to re ceire the square spiked teeth l1, the thickened peripheral parts of the disk plates beingpreferably dished so as to give. the teeth an outward cant as is clearly shown in the drawing. In addition to this outward cant, the teeth are preferably curved backward with respect 'to their direction of rotation tor a purpose presently to be described. The teeth are rigidly secured in position between the. two disk plates by nieans of clamping bolts 1L, and are preferably disposed cornerwise as shown7 the grooves in the plates being correspondingly formed. To prevent lengthwise displacement. each tooth is foi-ined with an offset, at its inner end which engages a noten in the disk grooves as shown al lh The disk plate l0 has a hub l-l tornuwl on its outer tace. The otherdisk plaie7 lo7 has its central. part left plain, and by reason of the thickened peripheral part there is formed a central depression l5 designed to receive the flanged end of one ot the spacing spools S, 9. Each ot' these spacing spools is formed at. one end with a flange 8, or il, that extends axially outward so as to einbrace the. hub le; of the adjacent disk: fit its other end, the spool is 'formed with an outwardly extendinq` fiance S". or 9C ada )ted u l. C

to he received in the depression l5 ot the other adjacent disk7 the thickness of the flange 8C being such that its inner face lies approximately flush with the adjacent face ot' the disk. Each of the spools 8 tion to the tlangcs Sh, 8C is foi-ined with a collar Sd which cooperates with the llange Se to prevent the lateral displacement oi the scraper bar 1S with which each head is pro- Each of the sc-raperpbars 18 is secured at its upper end to the transverse bar l of the gang traine, and at its lower cnd is bent partially around one or" the spacing spools between the tiange 8 and collar 8 ot the in addigang carries a bumper 2O secured in position by the gang bolt in the usual way.

With the tool gang thus constructed and mounted, it will be' see`n that as the implement is moved over the ground, the heads,

spacing' spools and gang bolt of cach gang rotate' in unison as in the case oit the disk barrow.

The scraper bars 18 are preferably curved as shown in Fig. 5. This form of the scraper bar in connection with thebackward curvature of the teeth il, previously rei'erred to, insures a very eiliective cleaning o1" they latter for it will be seen that sode and trash of any sort that may be picked up by the teeth are' torced outward alongA the lines of the teeth as they rise adjacent the scraper bars.

It will be observed that in the construction ,'oi the heads and spacing spoolsLas above set forth, the flanged ends of the spools have a very wide bearing against the opposite faces of the heads.A This greatly stillens the gang of tools as a whole and I consider it a feature of considerable practical importance.

What I claim is: y

l. In an implement hof the class set forth, the combination of the gang trame, the gangr` bolt or axle, the series of spike toothed disks on said bolt, each disk having in one face a central depression, the series of' spacing spools interposed between the disks, each spool having at one end a flangeadapted to enter the central depression of the adacent disk and, spaced inward from said flange, a collar, and the series of scraper bars7 each having its upper end secured to the frame and its lower end bent around aspacing spool between the aforesaid flange and col-- lar thereof.

2. In an implement of the class set forth,

. gang bolt y series of toothed heads on said gang bolt,

having a latat yone end a flange adlipted to enter the central depression ot the adjacent disk and, spaced inward from said flange, a collar, and the series of scraper bars, each having its upper end secured to the frame and its lower end bent around a spacing spool between the aioresaidv flange'and collar thereof.

3. In an implement of the class set forth, the combination of the frame, theaxle carried by the traine., the toothed head mounted on the axle and comprising a disk and a plurality oi backwardly curved "spike teeth eX- tending radially from the disk., and the .scraped bar secured to the frame and disposed adjacent one side of operatelwith the teeth.

4. ln an implement of the class set forth, the combination of the gang frame, the gan" bolt or axle, carried by the frame, the spaced series of toothed heads on said gang bolt,

the head to coaxle, the series of toothed heads, each each head comprising a disk and a plurality y ot' backwardlyourved axially canted spike teeth extending radially from the disk,y and a plurality of scraper bars carried by the frame, one adjacent each head to cooperate with the teeth thereof. I

5. lnairimpleinent of the class set forth, the combination of the gang frame, the or axle carried byy the frame, the

each head. comprising a disk orally extending hub flange and a plurality of spike teeth extending radially from the disk, and a series 4of spacing spools interposed between said heads, said spools having wide flanges to form a wide bearing against the .faces ofthe said disks and one of the flanges of eaol spool being extended axially and outwardly to'l embrace the hub flange of the'adjacent head.

l'n testimony whereof I atiiX my signature, in presence of two witnesses, y

CHARLES E. Wl-UTE Witnesses N. A. PETERSON, J. V.' Loom-MRT. 

